Valve and valve-gear of internal-combustion engines.



A. B. SALWAY.

VALVE AND VALVE GEAR or INTERNAL COMBUSTION ENGINES.

APPLICATION FILED NOV. 22, 1913.

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ALBERT EDWARD SALVI'AY, OF TAIBACH, "PORT TALBOT WALES, ASSIGNOR OF ONEHALF TO GEORGE ISAAC SALWAY, OF SEATTLE, WASHINGTQN.

VALVE'A ND VALVE'GEAR OF INTERNAL-COMBUSTLON ENGINES.

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Specificationet Letters Patent. iate ited Nov, 24 1914 Application filedNovember 22, 1913. Serial No. 802.515.

Toall whom it may concern I Be it known that I, ALBERT E. SALWAY, a

gear for internal 'combustioi'i-engines of the type wherein two exhaustvalves are employed on one cylinder, said valves co-aet mg with theobjects, among others, of oh,- taining quicker release of the exhaustgases, cooler enginehigher enginespeed and more poiven- According to thepresent invention these desirable-results are obtained means ofauxiliary exhaust devices adapted to be lit- 7 ted to my existing'ai'idalready constructed fourstroke' internal combi'istion' engine withside-by'side valves; without alterations, one or t o-valves being placedinn cylinder, one inplace of th'e' inlet valve cap, and the other inplace of the exhaust valve cup,-"'the valves being operated from theengines-cxisting exhaust valve. spindle,-or the engines exhaust valvetappet and therefore not interfering with the valve timing gear. V

The invention is illustrated bythe accompanying drawing as applied to asingle cyl- Hide-K;

ln carrying the invention into effect, the usual ca which is seiuwedover the exhaiist vali'e is removed as are also the colspindle.

A long collar 16 with an extendin and 1G is now secured by means of alotter 17 to the-lower end of the. exhaust valve spindle a and theauxiliary exhaust valve 2 of the same sizoas that of the existingexhaust 'valve phu-rd in its position in the valve seating l which isnow screived into the ope-ning left by the rei ioval of theforemcn'tioned cap, a copper or asbestos \vasher being insertedl'ietvveen its flange and the cylinder head to client a gas-tight joint.

The. dome locking nut '7 lien placed over the lower part S" of the valvedome 8 with a split loekingring (5 shaped to lit the valve seatinginterposed therehctween and the domepassed over the valve spindle 2"RIKl POSIUOIlCd in the valve ringand the locking out 7 scrcwedon saidring locking tension 801 the dome is' screwed the top end of tap-petroduide 23; t 1e same bein' locked in position nut and throug said guide ispassed the tappet rod 22,'the same at its lower end being adjustablySt'i'mYQCl into the tappet rod sleeve l8vand locked there by nut 18,said sleeve 18 at its lower end hein g forked to take thercbetween 'ihedome to said valve seating. 3 the" valve spring held hetu'een the dome 8and collar l by the cotter 5. In the arm or (ix-t0 the end of the arm16' of the collar 16,

said arm ll heing secured to said'fork hv bolt and nut or equivalentdevices 18".

The upper end of the tappetrod is 5 provided with a fork 22 into whichtakes and bears one end '27 of the rocker 27- pi'votaliv mounted in anysuitable manner at 18 to the rocker carrier 25, the same being screwedinto the dome top and locked there-. to by nut. while the other arm 27oft-he lorhei' 27 is adapted to bear on the center of the auxiliaryvalve stenrQ, a. play of'oneto said.

sixteenth of an inch being allowed arm '27".

The auxiliar exhaust pipe 11 is beveled so as to fit on the usualexhaust pipe-band Iv and is held thereto by clip b and screws b screwinginto the me'talof said auxiliarycxhausl pipe ll, the upper end of whichis locked to the extension 8 of the valve dome S lav means of split ringL0 and locking nut 9 which screws on to the end of the extension 8".

From an inspection of the drawing it will.

he readily understood that as the valve (1 .rises so is the auxiliaryvalve 2 depressed an amount correspondingto the rise of the ins valve 0,such depression being effected by the intermediary of the arm 16, tappet9.2

and rocker 27, and, as the areas of valves a and 2 are equal, thereobtains an exhaust of double capacity, part passing by way of exhaustpipe 1/ and part by auxiliary exhaust ll. 5

The auxiliary exhaust valve can appliml to any uumhvr o5. cylinders anengine mu) have, fitting one to each cylinder, and \vhrru-in cases suchas twin cylinders the exhaust gases pass away in opposite directions thevalve domesare duplicated; all

way of the wardly projecting arm, and means operable by the arm forefiectingmovement of the other of said valves g.

2. In a valve mechanism of the character described, a body provided withspaced ports, a valve for each port, a rocker lever supported for movingone valve, and an adJnstable connection between the other of said valvesand the rocker lever for imparting motion to the latter on movement ofthe last specified valve.

3. In a valve mechanism of the character described, a body provided withspaced ports, a valve for each port, spring means normally retaining thevalves closed, an out wardly extending arm on tlie'stem of one valve, arocker lever supported for opening the other valve, and a connectionbetween the arm and lever for effecting movement of the latter onoperation of the first specified valve.

4. In a valve mechanism of the character described, a body provided withspaced ports, a valve for each'port, spring means I normally "retainingthe valves closed, an out Wardly extending arm on the stem of one Yvalve, a rocker lever supported for opening the other valve, beingnormally free thereof,

and an adjustable connection between the arm and lever for effectingmovement of the latter on operation of the first specified valve;

5. In a valve mechanism of the character described, a body havingspa'ced ports, valves for the ports mounted for opposing movement, anoutwardly extending arm on the stem of one valve, a rocker leversupported for opening the other valve, a sleeve guide supported by thebody, and a connection arranged in the guide and between the arm andlever for transmitting motion to the letter on opening the firstspecified valve. 7

6. In a mechanism of the character described, 11 body provided withspaced ports, valves for said ports, means normally free from one valveand operable by the other valve for engaging the first valve foreffecting simultaneous movement of said valves, and means for operatingthe second named valve.

7. In a mechanism of the character described, a body provided withspaced ports, valves for said ports, means operable by one valve foroperating the other valve, said means being normally free from thesecond named valve and adjustable relatively to the latter, and meansfor operating the first named valve. V

Signed at Cardiff, Wales, this 10th day of November, 1913.

ALBERT EDWARD SALWAY.

Vtitnesses:

Loam A. Lsmuor, I FLORENCE H. LrrrLE.

